/*
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.example.news.provider;

import ohos.agp.components.Component;
import ohos.agp.components.ComponentContainer;
import ohos.agp.components.PageSliderProvider;

import java.util.List;

/**
 * PageProvider适配器
 */
public class PageProvider extends PageSliderProvider {
    private final List<Component> pages;

    public PageProvider(List<Component> pages) {
        this.pages = pages;
    }

    @Override
    public int getCount() {
        if (pages != null) {
            return pages.size();
        }
        return 0;
    }

    @Override
    public Object createPageInContainer(ComponentContainer componentContainer, int pos) {
        Component cpt = null;
        if (pages != null && pages.size() > pos) {
            cpt = pages.get(pos);
            if (cpt != null) {
                componentContainer.addComponent(cpt);
            }
        }
        return cpt;
    }

    @Override
    public void destroyPageFromContainer(ComponentContainer componentContainer, int pos, Object o) {
        if (pages != null) {
            Component component = pages.get(pos);
            if (component != null) {
                componentContainer.removeComponent(component);
            }
        }
    }

    @Override
    public boolean isPageMatchToObject(Component component, Object obj) {
        return true;
    }
}
